Re: [PATCH v2] rtl8xxxu: fix RTL8723BU connection failure issue after warm reboot
From: Kalle Valo
Date: Tue Oct 22 2019 - 04:26:41 EST
Chris Chiu <chiu@xxxxxxxxxxxx> wrote:
> The RTL8723BU has problems connecting to AP after each warm reboot.
> Sometimes it returns no scan result, and in most cases, it fails
> the authentication for unknown reason. However, it works totally
> fine after cold reboot.
> Compare the value of register SYS_CR and SYS_CLK_MAC_CLK_ENABLE
> for cold reboot and warm reboot, the registers imply that the MAC
> is already powered and thus some procedures are skipped during
> driver initialization. Double checked the vendor driver, it reads
> the SYS_CR and SYS_CLK_MAC_CLK_ENABLE also but doesn't skip any
> during initialization based on them. This commit only tells the
> RTL8723BU to do full initialization without checking MAC status.
> Signed-off-by: Chris Chiu <chiu@xxxxxxxxxxxx>
> Signed-off-by: Jes Sorensen <Jes.Sorensen@xxxxxxxxx>
Patch applied to wireless-drivers-next.git, thanks.
0eeb91ade90c rtl8xxxu: fix RTL8723BU connection failure issue after warm reboot